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Thatcher CX4 accident at Marshalltown, IA, 9 Sept 2021

Marshalltown, IA, United States

On September 9, 2021, a Thatcher CX4 operated by Pilot was involved in an aviation accident near Marshalltown, IA. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to properly determine the correct fuel quantity during preflight inspection that resulted in a loss of engine power during approach due to fuel exhaustion. This summary draws on records from NTSB; 11 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s failure to properly determine the correct fuel quantity during preflight inspection that resulted in a loss of engine power during approach due to fuel exhaustion.

— NTSB Determination

Contributing factors

Flight crewFluid levelRelated operating info

Related events

Same aircraft family

Same operator

  • 4 Aug 2026 — PIPER PA-24-250 (Pilot)
  • 27 Jul 2026 — Kitfox III (Pilot)
  • 20 Jul 2026 — PIPER J3C-65 (Pilot)
  • 17 Jul 2026 — Vans Aircraft Inc RV-8A (Pilot)
  • 10 Jul 2026 — Vans Aircraft Inc RV-12 (Pilot)

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